(Image credit: Future)

I've been tracking my sleep with the Oura Ring 5, now from $399 at Amazon , for four months and I have to say that it's the best sleep tracker of 2026. The ‘most accurate Oura Ring yet’, according to Oura, using the Ring 5 has even helped me chip away at my mega sleep debt .

However, the Oura Ring 5 shares a lot of similarities with its predecessor, the Oura Ring 4, which is now as low as $254.48 at Amazon . Before the launch of the 5, the 4 was our top-rated sleep tracker — but does the upgraded Oura Ring 5 deliver more accurate metrics? And is it worth the extra expense?

If you're looking to buy an Oura Ring to track your sleep in this month's mattress and sleep sales , or you're a proud owner of an Oura Ring 4 and debating whether to switch, I’m diving into the key differences between the Oura Ring 4 vs Oura Ring 5.…